Lv Hongying, Zhang Wenxin, Hosseini Maryam, Samani Majid Riahi, Toghraie Davood
Jiangsu Key Laboratory of E-waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China.
Jiangsu Key Laboratory of E-waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China.
J Environ Manage. 2023 Jun 15;336:117660. doi: 10.1016/j.jenvman.2023.117660. Epub 2023 Mar 7.
In this study, hexavalent chromium Removal from aqueous environments was investigated by using polyaniline composites with some natural waste materials. Batch experiments were used, and some parameters such as contact time, pH and adsorption isotherms were determined for the best composite with the highest removal efficiency. Scanning Electron Microscope (SEM), Fourier Transform Infrared (FTIR) spectroscopy, and X-ray Diffraction (XRD) were used to characterize the composites. According to the results, the polyaniline/walnut shell charcoal/PEG composite outperformed other composites and showed the highest chromium removal efficiency of 79.22%. Polyaniline/walnut shell charcoal/PEG has a larger specific surface area of 9.291 (m/gr) which leads to an increase in its removal efficiency. For this composite, the highest removal efficiency was obtained at the pH = 2 and 30 min contact time. The maximum calculated adsorption capacity was 500 mg/g.
在本研究中，通过使用聚苯胺与一些天然废料的复合材料，对从水环境中去除六价铬进行了研究。采用了批量实验，并针对去除效率最高的最佳复合材料确定了一些参数，如接触时间、pH值和吸附等温线。使用扫描电子显微镜（SEM）、傅里叶变换红外（FTIR）光谱和X射线衍射（XRD）对复合材料进行表征。结果表明，聚苯胺/核桃壳炭/聚乙二醇复合材料优于其他复合材料，铬去除效率最高，为79.22%。聚苯胺/核桃壳炭/聚乙二醇具有9.291（m/gr）的较大比表面积，这导致其去除效率提高。对于该复合材料，在pH = 2和接触时间30分钟时获得了最高去除效率。计算出的最大吸附容量为500 mg/g。
